(maint) Add more crontab provider tests

This commit adds the following tests to the cron resource:

* A test to ensure that the crontab provider writes the crontab file of
a new user

* A test to ensure that the crontab provider fails to write the crontab
file of a nonexistent user

* A test to ensure that the crontab provider writes an originally
unauthorized user's crontab file _if_ Puppet authorizes them in the
middle of the run

These tests are part of the crontab provider's specifications and should
have been added before.

1 files changed, 20 insertions, 0 deletions

diff --git a/spec/acceptance/tests/resource/cron/should_fail_to_write_a_nonexistent_users_crontab_spec.rb b/spec/acceptance/tests/resource/cron/should_fail_to_write_a_nonexistent_users_crontab_spec.rb
new file mode 100644
index 0000000..40fbbd9
--- /dev/null
+++ b/spec/acceptance/tests/resource/cron/should_fail_to_write_a_nonexistent_users_crontab_spec.rb
@@ -0,0 +1,20 @@
+require 'spec_helper_acceptance'
+
+RSpec.context 'when Puppet attempts to write the crontab of a nonexistent user' do
+  let(:nonexistent_username) { "pl#{rand(999_999).to_i}" }
+
+  before(:each) do
+    step 'Ensure that the nonexistent user does not exist' do
+      compatible_agents.each do |agent|
+        user_absent(agent, nonexistent_username)
+      end
+    end
+  end
+
+  compatible_agents.each do |agent|
+    it "should fail on #{agent}" do
+      manifest = cron_manifest('second_entry', command: 'ls', user: nonexistent_username)
+      apply_manifest_on(agent, manifest, expect_failures: true)
+    end
+  end
+end